When comparing Tumblr vs Inbox, the Slant community recommends Inbox for most people. In the question“What are the best Material Design apps?”Inbox is ranked 3rd while Tumblr is ranked 19th. The most important reason people chose Inbox is:

Inbox tries automatically bundling similar messages together. For example, Inbox will create bundles for travel information, receipts, promotions as well as group messages temporally. It enables also managing these bundles of messages together - they can all be swiped away together.

Pros

Pro

Free

It costs nothing to create a Tumblr account.

Pro

Community-driven

It is built around sharing and discovering new, short-form content.

Pro

Supports responsive design & mobile-friendly websites

Tumblr supports responsive design for the website as it will be fitted with the same theme based on which device the user is using to view the website. It can also vary by theme with responsive design availability.

Pro

Good customization options

Tumblr allow users to customize their website with many built-in themes. In addition to theme selection, user can also further customize their website either through a customization editor wizard or through a HTML and CSS editor for advanced users.

Pro

Great mobile apps

Easy to use Windows Phone, iOS and Android are available.

Pro

Custom domain support

If you want to use your own domain instead of *.tumblr.com, you can.

Pro

Intelligent categorization

Inbox tries automatically bundling similar messages together. For example, Inbox will create bundles for travel information, receipts, promotions as well as group messages temporally. It enables also managing these bundles of messages together - they can all be swiped away together.

Pro

Can snooze emails

Messages can be snoozed for a certain period of time or until at a certain location.

Pro

Can create tasks from dates and tasks in messages

If a message includes a date, Inbox is capable of automatically creating a task from that information.

Pro

Surfaces important information from messages

If an email contains pictures, flight information, reservation at a restaurant, attachments, links, dates, phone numbers and other information that the application recognizes, it will surface that information in its main view. These items can be viewed and interacted with without having to open the message itself. It allows finding and taking action on the important email information quickly.

Pro

Works towards an empty inbox

Inbox is designed to reach an empty inbox by either archiving or snoozing your mails.

Pro

Integrates Google Now reminders

Pro

Also available on Chrome and iPhone

Pro

Integrates realtime updates in messages

Through a feature called Assists, Inbox offers context sensitive updates to messages. These include information such as flight status updates before a scheduled flight.

Pro

Smart quick replies

When you hit reply you can choose from 3 auto generated replies that are based on the content of the received email analyzed by Google's AI.

Pro

Works with Google Apps through an early adopter program

Cons

No cons yet!

Con

Missing some advanced Gmail settings

Occasionally you have to use the provided link back to the legacy Gmail app for specific functions, due to the simplifications that Inbox makes.

Con

Cannot add multiple labels to an email

gmail uses labels to categorize emails. Using multiple labels can make it easier to find the email later on. Ex: "work", "friends", "london".Index only allows to add one label per email, effectively turning them into directories. All the benefits of labels are lost, then.